dsh-session-link: Codex-Style Session Deep Linking Plugin for DeepSeek Harness

dsh-session-link is an MIT-licensed plugin for DeepSeek Harness (DSH), designed to address the difficulty of referencing context across sessions in web workflows. Through its session deep-linking feature, the plugin allows users to copy a `dsh://session/<session-ID>` link from a session header and paste it into another conversation, whereupon the source session content is injected as controlled, read-only snapshot background context. On Windows, it supports registering a protocol handler, enabling direct opening of the Web GUI and locating the corresponding session upon clicking the link. The plugin features robust error handling, preserving original text and logging issues for malformed links, self-references, or permission anomalies, with default limits of 3 references per message and 64 KiB per source, propagating only text while excluding non-text blocks such as images. Installation requires executing